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password in a con guration le is almost as bad as putting it in the source: Anyone who has access to the con guration now also has access to the password Performing some sort of trivial encoding of the password doesn t help Using rot13 or base64 encoding offers very little in terms of security The end result of storing clear-text passwords in con guration les is that the people responsible for con guring, deploying, and maintaining the system have to be trusted with the passwords This exposure makes the application painful to maintain either the set of administrators has to be kept small or the application owners have to trust a large group of people Some Java application servers claim the capability to manage passwords in a more secure way, but their version of secure can be imsy For example, the current version of WebSphere Application Server (Version 61) uses a simple XOR algorithm for obfuscating values A senior technical staff member at IBM said In general, [XOR encoding] is just ne, as a truly stronger solution would require hardware support" [Botzum, 2006] Ha The reality is that XOR is a trivial encoding that does next to nothing to protect the password For a secure solution, the only viable option today appears to be one that you create for yourself The most secure solution for outbound passwords is for an authorized administrator to provide passwords to the system at startup Version 11 of the Payment Card Industry (PCI) Data Security Standards takes this model a step further and requires a split-key approach, in which encryption key components dispersed to two or more people must be combined to access customer credit card information [PCI DSS, 2006] These approaches make automatic restarts impossible, and for many systems, this level of human intervention is impractical For systems that can afford to trade away some security in favor of improved maintainability, the following strategy is often adequate to protect passwords and other secrets: Encrypt passwords and other secrets with a publicly vetted implementation of strong encryption algorithm, and store the cipher text in a con guration le Store the key needed to decrypt the password in a separate le where the running application can access it but most system maintainers cannot For example, assuming that the application runs as the user app, the key might reside in the le ~app/private/passwdkey Application administrators might have access to only the directory ~app/deployment Diffusing password information forces an attacker to compromise multiple components of the system to gain access to the clear-text password The.

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This parameter speci es the format, or dimension, of the generated texture coordinates The format value is either TEXTURE_COORDINATE_2 or TEXTURE_ COORDINATE_3

public final void setGenMode(int genMode) public final int getGenMode()

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password can still be changed by modifying a con guration le, but the con guration le doesn t contain enough information to jeopardize the password Even if it is not possible to make the key le inaccessible to application administrators, encrypting the password provides protection against casual attackers A clear-text password in a con guration le is a temptation that an otherwise upstanding person might not be able to pass up Making the password harder to recover helps keep honest people honest Java makes cryptography relatively easy, but the JavaDoc for the core cryptography classes does not make performing simple tasks as easy as one might hope To demonstrate that it is not hard to store your passwords in a secure way, Example 114 shows source code for a stand-alone utility that encrypts and decrypts passwords using a secret key

This parameter speci es the texture coordinate generation mode The value is one of OBJECT_LINEAR, EYE_LINEAR, or SPHERE_MAP

import import import import import import javaxcrypto*; javasecurity*; javaioBufferedReader; javaioInputStreamReader; javaioReader; javaioIOException;

Version 11 Alpha 01, February 27, 1998

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Object menus contain menu items for creating, deleting, and modifying objects of the type Object Object refers to an object type within the window's top-level object type, referred to here as File An Object menu differs from a renamed File menu For information on File and renaming the File menu, see page 43

public final void setPlaneS(Vector4f planeS) public final void getPlaneS(Vector4f planeS)

public class PasswordProtector { final static String CIPHER_NAME = "AES"; final static Reader in = new BufferedReader( new InputStreamReader(Systemin)); /* * This utility has three modes: * 1) Generate a new key: * PasswordProtector new * Generates a new key and print it to stdout You can * use this key in subsequent operations * 2) Encrypt a password: * PasswordProtector encrypt <key> <password> * Encrypts the password and prints the results to stdout * 3) Decrypt a password: * PasswordProtector decrypt <key> <encrypted password> * Decrypts a password and prints it to stdout * * This code makes use of the open source Base64 * library (http://ihardersourceforgenet/base64/) */ public static void main(String[] args) throws Exception { String cmd = args[0]; String out = "commands are 'new', 'encrypt' and 'decrypt'";

This parameter speci es the S coordinate plane equation This plane equation is used to generate the S coordinate in OBJECT_LINEAR and EYE_LINEAR texture generation modes

Key k; if ("new"equals(cmd)) { out = StringFromKey(makeKey()); } else if ("encrypt"equals(cmd)) { k = keyFromString(getString("Enter key")); String pswd = getString("Enter password"); out = encryptPassword(k, pswd); } else if ("decrypt"equals(cmd)) { k = keyFromString(getString("Enter key")); String enc = getString("Enter encrypted password"); out = decryptPassword(k, enc); } Systemoutprintln(out) ; } private static String getString(String msg) throws IOException { Systemoutprint(msg + ": "); return new BufferedReader(in)readLine(); } /* generate a brand new key */ private static Key makeKey() throws Exception { Cipher c = CiphergetInstance(CIPHER_NAME); KeyGenerator keyGen = KeyGeneratorgetInstance(CIPHER_NAME); SecureRandom sr = new SecureRandom(); keyGeninit(sr); return keyGengenerateKey(); } private static Key keyFromString(String ks) { return (Key) Base64decodeToObject(ks); } private static String StringFromKey(Key k) { return Base64encodeObject(k, Base64DONT_BREAK_LINES); } /* encrypt the given password with the key Base64 encode the ciphertext */ private static String encryptPassword(Key k, String passwd) throws Exception { Cipher c = CiphergetInstance(CIPHER_NAME); cinit(CipherENCRYPT_MODE, k); byte[] bytes = cdoFinal(passwdgetBytes()); return Base64encodeObject(bytes); } /* decrypt an encrypted password (assumes ciphertext is base64 encoded */ private static String decryptPassword(Key k, String encrypted) throws Exception { byte[] encryptedBytes; encryptedBytes = (byte[]) Base64decodeToObject(encrypted); Cipher c = CiphergetInstance(CIPHER_NAME);

public final void setPlaneT(Vector4f planeT) public final void getPlaneT(Vector4f planeT)

This parameter speci es the T coordinate plane equation This plane equation is used to generate the T coordinate in OBJECT_LINEAR and EYE_LINEAR texture generation modes

cinit(CipherDECRYPT_MODE, k) ; return new String(cdoFinal(encryptedBytes)); } }

public final void setPlaneR(Vector4f planeR) public final void getPlaneR(Vector4f planeR)

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